Heat transfer apparatus



May 24, 1932. I E.` M. BAssLER 1,860,125

` HEAT TRANSFER APPARATUS v Filedl'Aug. 2, 1930 2 sheets-sheet 1 2Sheets--Sheet 2 Filed Aug. 2. v1930 Vas Patented May 24, 1932 EDWIN M.BAssLEn, oF cH'IcAeo, TLLINo-Ts,

ASSIGNOR TO vD. J'. MRRAY MNUFCTUB- ING COMPANY, OF WAUSAU, WISCONSIN, ACORPORATION OF WISCONSIN HEAT TRANSFER APPARATUS Application ifiled.August ,2,

This invention relates to heat transfer apparatus, and relatesparticularly to such apparatus comprising a hollow header, supply andreturn-manifolds connected toopposite ends thereof, adapted forsupplying ,a thermal agent to said header, and a fan mounted inassociation with said apparatus for directing aacurrent of air over Vorthrough said header. i

A particular object ofthe invention is to provide improved andsimplified means for mountingr and supporting the apparatus, whereby thebottom manifold will sustziin the' entire weight thereof, thus relievingits parts, other than the bottom manifold, and particularly the ointsconnecting the manifolds'with the header from all stresses due to theweight of the apparatus-rendering it possible to use relatively lightand inexpensive fittings.

Further objects of the invention are to provide a fitting of new andnovel construction lfor connecting the manifolds with the header orheaders of the apparatus, whichwill'be simple in construction, lstrongand to manufacture and install; which can be effectively sealed toprovide duid-tight joints between the manifolds and header or headers;Which will reduce the number of screw joints necessary for connectingthe manifolds with the headeror headers; and which'will reduce theover-all dimensions of the apparatusbe-l tween the remote sides of themanifolds to a minimum.

To effect the various objects of the invention, my improved heattransfer apparatus comprises the various features, combinations offeatures and details of construction hereinafter described and claimed.i

In the accompanying drawings in which the invention is fullyillustrated,

Fig. 1 is a side view of heat transfer ap,-

paratus embodying my invention and improvements.

Fig. 2 is an enlarged sectional View of heat transfer apparatusembodying my invention and improvements, the headers and a portion ofthe lower manifold being shown in elevation.

Fig. 3 is a detached top plan view, partly durable; which will berelatively inexpensive 1930. Serial N0. 472,533.

in section, of the top manifold of the appal ratus. f

Fig. 4 is a bottom plan view of the bottom manifold; and f Fig. 5 is afragmentary `sectional detail view on an enlargedscale, substantially onthe line 5-5 of Fig. 3, showing one of the )oints connecting themanifolds with' the Describing'the invention with reference to ,thedrawings, my improved heat transfer a'ppa-ratus, designated as a wholeA, comprises one or more, as shown three, hollow headers a, supply andreturn manifolds al a2 connected to the tops and bottoms of saidheaders, re-

spectively, and adapted to supply a circulation of steam,`brine, ammoniaor other thermal agent to said headers, and as designates vthe motor ofa fan forming partof the apparatus and adapted for discharging a currentof air over or through the headers a.

As regards their usual features and excepting as hereinafterparticularly described and pointed out, all of the above and foregoingdevices may be of any usual or approved construction and will be'readily understood by persons familiar with the art from an examinationof the drawings, without-a description thereof in detail.

As shown, theheaders a, see particularly Fig. 5, are of a typecomprising a hollow core 1 made of suitable cast metal, preferably castiron, and a shell E2 of another metal, desirably an aluminum alloy,formed integral `with which are outwardly projecting spaced tins Aheader of the general type specivfied is shown, described and claimed inan application for U. SL'Letters Patent therefor, heretofore filed by meon or about October Q1, 1929, Serial No. 401,321, to which reference ishere made for a description thereof in detail.

.ln accordance with my invention, see particularly Fig. 5, the manifoldsafa? are connected to the headers a by hollow fittings l, which entendthrough holes formed in the adjacent'walls of said manifolds. an end ofcach of which has screw threaded engagement with a hole formed in anendof a header a and formed on the'opposite end of which is a head 5, theshoulder at the underside of l opposed' surfaces of said headers andmanifolds.

` Thewashers 8 may be made of different materials depending upon the useto which the apparatus is to be put. v Thus,'copper gaskets willpreferably be used in connection with steam or hot water circulation,while steel or lead gaskets will be used with ammonia, brine, ete. f

A particular advantagearising from the use of the sleeve fittings 4 Iforconnecting the manifolds to the headers is that each joint yhas ybut onethreaded connection, thus practically reducing the number ofscrew-threaded connections by more than one-half, as compared with theuse of usuallconnections heretofore commonly used` inmaking suchconnections.v f

A further advantage` arising from the use of my improved sleeve fittingsis that by its use, the over-all dimension of the apparatus between theremote sides of the headers a1 a2 is reduced to a minimum, the surfacesof the parts connected thereby resting directly in contact with eachother.

To attain the object ofthe invention as it relates to mounting theapparatus, said apparatus is supported by mea-iis of rods 9 which extendthrough holes formed in opposite ends of the bottom manifold a2 formedon which are heads or abutments 10 upon which said manifold rests andissupported. Said rods 9 also extend through holes formed iii the ends ofthe top manifold to which they are fitted so as to be freely movable andthus support the apparatus in stable operative position. .The rods 9 mayeither besuspension rods, their upper ends being attached to a suitablesupport, not shown, or, if desired, the lower ends of said rods maybesecured in a suitable base or foundation. 1

iVith the described construction, it is ob vious that the weight of theentire apparatus will be sustained by the rods 9 and that thesleevefittings 4 which connect the manifolds al a2 to the headers a will berelieved lfrom all stress and duty due to the Weight machine work onsaid fittings will be great- 1y reduced, thus further reducing the costthereof.

To provide for conveniently and economically forming the holes in theheaders a to. Areceive the said hollow fittings 4, holes 11 are formedin said headers diainetrically opposite to and in line with the holesformed therein which receive said fittings 4. Said holes 11 are madesufficiently large to permit the passage therethrough of the heads vofthe fittings 4 and, after the headers a and 'manifolds a1 a2 have beenassembled, kwill be closed by means of screw-plugs 12, or the like.

As shown, the supply and return connections 13 and`14 to the top andbottom manifolds a1 a2, respectively, consist of iiange unions 15 whichare old and well-known and will be readily understood by personsfamiliar with the art from an examination of the` drawings without adescription thereof in detail. .Said supply and return connections aresealed by means of suitable gaskets 16, in a usual manner.

In operation, a current of air is adapted to be discharged over orthrough the headers a by means of the fan a3. In order that theapparatus may form a self-contained unit, the fan motor a3 is preferablymounted at the upper end of a bracket arm 17 Which, as shown, isdetachably secured to the bottom manifold a2, said bracket arm beingangular in shape and proportioned to support the fan with its axissubstantially in line with the center line of the header or group ofheaders a.

Aflsofi'n accordance with usual practice, the vheaders a are enclosed ina suitable sheet metal casing, designated as a whole b, the fan 18being` positioned in a hole formed in the rear wall of said casing, andthe lfront of the casing consisting of adjustable louvers 19 by whichthe air current may be regulated and controlled, as may be desired.

I claim:

and return manifolds, a plurality of tubular radiator elementsconnecting said manifolds,

leach of said tubular elements being a coinpound structure comprising ahollow casting having integral radiating fins and a separate conduitaround which said casting is formed, said conduit being internallythreaded at its ends, and hollow headed fittings having threadedengagement with said conduit and bearing on said manifolds.

In witness that I claim the foregoing asl my invention, I atiix mysignature this 28th day of July, 1930.

- EDWIN VM. BASSLER.

ofthe apparatus, whereby it is possible to ed connections, as heretoforedescribed, the

